Endoscopic surgical device, treatment tool, and guide member

Abstract

An endoscope insertion part of an endoscope and a treatment tool insertion part of a treatment tool are insertable through an overtube inserted into a body wall, and a slider is provided for moving the endoscope insertion part and the treatment tool insertion part forward and backward in an interlocking manner. An operating part of the treatment tool includes a guide member that guides a cable part so as to be movable forward and backward in an axial direction so that the cable part of the endoscope is kept from being separated from the surface of the operating part beyond a fixed distance. Accordingly, the cable part can be reliably held down by an index finger of a right hand gripping the operating part, and, the operation of the operating part and the movement operation of the endoscope insertion part can be performed with only a right hand.

What is claimed is: 
     
         1 . An endoscopic surgical device comprising:
 an endoscope including an endoscope insertion part having an observation part provided at a distal end thereof and a flexible cable connected to a base end of the endoscope insertion part;   a treatment tool including a treatment tool insertion part having a treatment part provided at a distal end thereof and an operating part for operating the treatment part provided at a base end of the treatment tool insertion part; and   an overtube that guides the endoscope insertion part and the treatment tool insertion part into a body cavity,   wherein the overtube includes
 an overtube body that passes through a body wall and is inserted into the body cavity, 
 an endoscope insertion passage that is provided inside the overtube body and allows the endoscope insertion part to be inserted therethrough so as to be movable forward and backward, and 
 a treatment tool insertion passage that is provided inside the overtube body and allows the treatment tool insertion part to be inserted therethrough so as to be movable forward and backward, and 
   wherein the treatment tool includes a guide member that is provided in the operating part and guides the cable so as to be movable forward and backward in an axial direction so that the cable is kept from being separated from a surface of the operating part beyond a fixed distance.   
     
     
         2 . The endoscopic surgical device according to  claim 1 ,
 wherein the guide member is provided at a position where the cable is capable of being held down by an index finger of a hand operating the operating part.   
     
     
         3 . The endoscopic surgical device according to  claim 1 ,
 wherein the operating part includes a handle part that is gripped by an operator and allows the operator to operate the treatment tool, and   wherein in a plan view in which the operating part is viewed from a side opposite to a side where the treatment tool insertion part is formed in an axial direction of the treatment tool insertion part, the guide member is arranged on any of surfaces on an upper side, a lower side, a left side, and a right side of the operating part in a state where the handle part is turned down.   
     
     
         4 . The endoscopic surgical device according to  claim 3 ,
 wherein the guide member is arranged on a surface on a right side or a left side of the operating part.   
     
     
         5 . The endoscopic surgical device according to  claim 1 , further comprising:
 an interlocking member including an endoscope-coupled part coupled to the endoscope insertion part inserted through the endoscope insertion passage and a treatment tool-coupled part coupled to the treatment tool insertion part inserted through the treatment tool insertion passage, the interlocking member being arranged inside the overtube body so as to be movable forward and backward,   wherein the interlocking member includes a dead zone where the forward and backward movement of either the endoscope or the treatment tool does not interlock with the movement of the other and a sensing zone where the forward and backward movement of either the endoscope or the treatment tool interlocks with the movement of the other.   
     
     
         6 . A treatment tool used for an endoscopic surgical device including an endoscope including an endoscope insertion part having an observation part provided at a distal end thereof and a flexible cable connected to a base end of the endoscope insertion part, a treatment tool including a treatment tool insertion part having a treatment part provided at a distal end thereof and an operating part for operating the treatment part provided at a base end of the treatment tool insertion part, and an overtube that guides the endoscope insertion part and the treatment tool insertion part into a body cavity,
 wherein the overtube includes an overtube body that passes through a body wall and is inserted into the body cavity, an endoscope insertion passage that is provided inside the overtube body and allows the endoscope insertion part to be inserted therethrough so as to be movable forward and backward, and a treatment tool insertion passage that is provided inside the overtube body and allows the treatment tool insertion part to be inserted therethrough so as to be movable forward and backward, and   wherein the operating part is provided with a guide member that guides a cable so as to be movable forward and backward in an axial direction so that the cable is kept from being separated from a surface of the operating part beyond a fixed distance.   
     
     
         7 . A guide member used for an endoscopic surgical device including an endoscope including an endoscope insertion part having an observation part provided at a distal end thereof and a flexible cable connected to a base end of the endoscope insertion part, a treatment tool including a treatment tool insertion part having a treatment part provided at a distal end thereof and an operating part for operating the treatment part provided at a base end of the treatment tool insertion part, and an overtube that guides the endoscope insertion part and the treatment tool insertion part into a body cavity,
 wherein the overtube includes an overtube body that passes through a body wall and is inserted into the body cavity, an endoscope insertion passage that is provided inside the overtube body and allows the endoscope insertion part to be inserted therethrough so as to be movable forward and backward, and a treatment tool insertion passage that is provided inside the overtube body and allows the treatment tool insertion part to be inserted therethrough so as to be movable forward and backward, and   wherein the guide member is attachable to the operating part of the treatment tool, and guides a cable so as to be movable forward and backward in an axial direction so that the cable is kept from being separated from a surface of the operating part beyond a fixed distance.   
     
     
         8 . The guide member according to  claim 7 ,
 wherein the guide member is provided at a position where the cable is capable of being held down by an index finger of a hand operating the operating part.   
     
     
         9 . The guide member according to  claim 7 ,
 wherein the operating part includes a handle part that is gripped by an operator and allows the operator to operate the treatment tool, and   wherein in a plan view in which the operating part is viewed from a side opposite to a side where the treatment tool insertion part is formed in an axial direction of the treatment tool insertion part, the guide member is arranged on any of surfaces on an upper side, a lower side, a left side, and a right side of the operating part in a state where the handle part is turned down.   
     
     
         10 . The guide member according to  claim 9 ,
 wherein the guide member is arranged on a surface on a right side or a left side of the operating part.